<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.tradingunited.es/foro/lenguaje-del-precio/17813-patrones-estructuras-e-intenciones-12.html?s=3bac93cd0b81914961225a405950423c>